Milestone Educational - Not getting my salary

I have been working as an ielts trainer at milestone educational for almost * years even though i was exploited at work with poor salary but i never raised any voice.... Recently from January **** to march ****....they started to give me only **** per month and said the number of students are less i said no issues but it happened for * months.... And for me it was very hard to survive at **** per month or by borrowing money from friends....then i finally decided to leave the job without letting them know.....i just told the students that I'll not be coming from tomorrow and i never encouraged any of the students to leave the institution but milestone educational is now blaming me that i have forced the students to leave the center and they are not giving my * months salary plus extra tuition class salary also....i demand that they can cut ine month's salary because i left the institution without notice but rest of the payable amount must be given... My attendance is at office and all other evidence....i do have some transaction records but other evidence are kept by them.